EP 0019025 B1 19821215 - PROCESS FOR THE PRODUCTION OF POLYETHYLENE WITH LOW ENERGY CONSUMPTION AND APPARATUS FOR CARRYING OUT SAID PROCESS
Title (en)
PROCESS FOR THE PRODUCTION OF POLYETHYLENE WITH LOW ENERGY CONSUMPTION AND APPARATUS FOR CARRYING OUT SAID PROCESS
Publication
Application
Priority
EP 79400320 A 19790522
Abstract (en)
[origin: EP0019025A1] 1. A process for the manufacture of polyethylene by polymerizing ethylene in at least one reactor under a pressure of 800 to 2,500 bars and at a temperature of 150 degrees to 350 degrees C, in which the mixture leaving the reactor through an expansion valve is supplied to a separator under a pressure of 50 to 400 bars undergoes cooling between said valve and said separator, whereby the major part of the enthalpy decrease available between the polymerisation reactor and the separator is recovered, characterized in that said cooling is effected by passing at least part of the mixture leaving the reactor through a turbine consisting of at least one stage successively comprising a fixed nozzle and a bladed wheel having a rotation speed of between 12,000 and 40,000 revolutions per minute, the mixture leaving the last stage of said turbine being supplied to said separator.
IPC 1-7
IPC 8 full level
B01J 3/06 (2006.01); B01J 8/00 (2006.01); C08F 2/00 (2006.01); C08F 10/02 (2006.01)
CPC (source: EP)
B01J 3/06 (2013.01); B01J 8/0005 (2013.01); C08F 10/02 (2013.01)
Designated contracting state (EPC)
AT BE CH DE GB IT LU NL SE
DOCDB simple family (publication)
EP 0019025 A1 19801126; EP 0019025 B1 19821215; AT E2007 T1 19821215; DE 2964254 D1 19830120
DOCDB simple family (application)
EP 79400320 A 19790522; AT 79400320 T 19790522; DE 2964254 T 19790522